package com.yukuno.gulimall.auth.controller;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.TypeReference;
import com.yukino.common.constant.AuthServerConstant;
import com.yukino.common.utils.HttpUtils;
import com.yukino.common.utils.R;
import com.yukuno.gulimall.auth.feign.MemberFeignService;
import com.yukino.common.vo.MemberRespVo;
import com.yukuno.gulimall.auth.vo.SocialUser;
import lombok.extern.slf4j.Slf4j;
import org.apache.http.HttpResponse;
import org.apache.http.util.EntityUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.SessionAttributes;

import javax.servlet.http.HttpSession;
import java.util.HashMap;
import java.util.Map;

/**
 * 处理社交登录请求
 */
@Slf4j
@Controller
@RequestMapping("/oauth2.0")
public class OAuth2Controller {
    @Autowired
    MemberFeignService memberFeignService;

    /**
     * 退出登录
     * @param session
     * @return
     */
    @GetMapping("/logout")
    public String login(HttpSession session){
        if(session.getAttribute(AuthServerConstant.LOGIN_USER) != null){
            log.info("\n[" +
                    ((MemberRespVo)session.getAttribute(AuthServerConstant.LOGIN_USER)).getUsername()
                    + "] 已下线");
        }
        // 让session失效
        session.invalidate();
        return "redirect:http://auth.gulimall.com/login.html";
    }

    /**
     * 社交登录成功回调
     * @param code
     * @return
     * @throws Exception
     */
    @GetMapping("/weibo/success")
    public String weibo(@RequestParam("code") String code, HttpSession session) throws Exception {

        Map<String, String> map = new HashMap<>();
        map.put("client_id", "1935263329");
        map.put("client_secret", "8415921181f5af59d1490ec8f41712af");
        map.put("grant_type", "authorization_code");
        map.put("redirect_uri", "http://auth.gulimall.com/oauth2.0/weibo/success");
        map.put("code", code);
        Map<String, String> headers = new HashMap<>();
        // 1、根据code换取accessToken
        HttpResponse response = HttpUtils.doPost("https://api.weibo.com", "/oauth2/access_token", "post", headers, null, map);

        // 2、处理
        if (response.getStatusLine().getStatusCode()==200) {
            // 获取到了accessToken
            String json = EntityUtils.toString(response.getEntity());
            SocialUser socialUser = JSON.parseObject(json, SocialUser.class);

            // 知道当前是哪个社交用户
            // 1)、当前用户如果是第一次进网站，自动注册进来（为当前社交用户生成一个会员信息账号，以后这个社交账号就对应指定的会员）
            // 登录或者注册这个社交用户
            R oauthLogin = memberFeignService.oauthLogin(socialUser);
            if (oauthLogin.getCode() == 0) {
                MemberRespVo data = oauthLogin.getData("data", new TypeReference<MemberRespVo>() {
                });
                log.info("登录成功：用户：{}", data.toString());

                // TODO 1、默认发的令牌 解决子域session共享问题
                // TODO 2、使用JSON的序列化方式来序列化对象数据到redis
                session.setAttribute("loginUser", data);
                // 2、登录成功就跳回首页
                return "redirect://gulimall.com";
            } else {
                return "redirect:http://auth.gulimall.com/login.html";
            }

        } else {
            return "redirect:http://auth.gulimall.com/login.html";
        }

    }
}
